How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Friday100.0*Chance in playoffs100.0*Average seed
Carolina 5 Myrtle Beach 1 -0.5
-0.3
Winston-Salem 11 Wilmington 3 -0.3
Winston-Salem 5 Wilmington 3 -0.3
Potomac 4 Salem 2 +0.2
Potomac 5 Salem 4 +0.2
If winner is:HomeAway
Saturday100.0*Chance in playoffs100.0*Average seed
Carolina vs Myrtle Beach-0.1+0.1
-0.3+0.3
Carolina vs Myrtle Beach-0.1+0.1
-0.3+0.3
Winston-Salem vs Wilmington-0.1+0.1

What If

Chances based on how well the Myrtle Beach finish out the regular season.   Explain

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
4010-020.7%210671331,986
399-15.7606035241,197
388-20.810386101,084,144
377-30.000178312,887,450
366-4Out488805,039,695
355-5Out06136206,050,190
344-6Out0175524405,042,703
333-7Out119512732,882,336
322-8Out012947231,082,641
311-9Out63460240,813
300-10Out099031,995
Total:0.1%0054924136224,615,150
Games Above .500
Chance Will Make Playoffs